Why does CT utilise compton scattering?

  • Thread starter lavster
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  • #1
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Main Question or Discussion Point

why does conventional xray imaging utilise photoelectric effect but ct utilise compton scattering? i know that at different energies, different mechanisms (eg compton scattering, photoeletric effect, pair production) dominate but do they not chose the energy beam to correspond the process that they want - i know they harden the beam (ie get rid of low energy photons) for example

cheers
 

Answers and Replies

  • #2
mathman
Science Advisor
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The point you are making is correct. Compton scattering is the dominant process for higher energy (~ 1 Mev or high kev) for photons.
 

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